<template>
  <div class="login_container">
      <div class="login_box">
        <div class="avatar_box">
          <img src="../assets/logo.png" alt="" />
        </div>
        <!-- 表单 -->
        <el-form ref="loginFormRef" label-width="0px" class="login_form" :model="loginForm" :rules="loginFormRules">
          <!-- 用户名 -->
          <el-form-item prop="username">
            <el-input  prefix-icon="el-icon-user-solid" v-model="loginForm.username"></el-input>
          </el-form-item>
          <!-- 密码 -->
          <el-form-item prop="password">
            <el-input  prefix-icon="el-icon-key" v-model="loginForm.password" type="password"></el-input>
          </el-form-item>
          <!-- 按钮 -->
          <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
        </el-form>
      </div>
  </div>
</template>

<script>
export default {
  data(){
    return{
      // 登录表单绑定对象
      loginForm:{
        username:'admin',
        password:'123456'
      },
      //验证规则对象
      loginFormRules:{
        username:[
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password:[
          { required: true, message: '请输密码', trigger: 'blur' },
          { min: 5, max: 15, message: '长度在 5 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods:{
    resetLoginForm(){
      this.$refs.loginFormRef.resetFields();
    },
    login(){
      this.$refs.loginFormRef.validate(async valid =>{
        if(!valid) return;
        const {data:res} = await this.$http.post('login',this.loginForm);
        if(res.meta.status !==200) return this.$message.error("登录失败");
        this.$message.success("登录成功！");
        //token
        window.sessionStorage.setItem("token",res.data.token);
        this.$router.push("/home");
      });
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box{
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top:50%;
  transform: translate(-50%, -50%);

  .avatar_box{
    height: 130px;
    widows: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img{
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.btns{
  display: flex;
  justify-content: flex-end;
}

.login_form{
  bottom: 0;
  position: absolute;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
